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for details
www.wireless-driver.com/.../Do-wireless-network-cards-need-to-support-WMM-80211e-or-is-it-only-a-function-of-a-wirele... - 20k -

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Posted by waqasahmad

It must be supported in all WLAN (Wireless LAN) devices in order to work and WMM (802.11e) specifies the enhancements to the MAC layer of 802.11 networks.

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Posted by HamidAliKhan

WMM (802.11e) specifies the enhancements to the MAC layer of 802.11 networks. It must be supported in all WLAN devices in order to work.

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Posted by justfawad